little traffic in nv2

hello which is the best configuration for nv2 I have an antenna ovnitik with 25 clients and does not spend more than 20 to 25 megabytes of consumption but when I do one tees in each clup passes 50 to 60 megabytes I opened some tutorial of configuration for the ap in nv2 only- from now thank you very much

NV2 is an old protocol try to switch to 802.11 if you are lucky with interference and hidden nodes maybe you 'll have better perfomance